2010 rooftop training webinair. high efficiency models / sizes typecarrierbryant yac48tc580j3-12.5...
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2010 RooftopTraining Webinair
High EfficiencyModels / Sizes
Type Carrier Bryant
YAC 48TC 580J 3-12.5 tons
PAC 50TC 558J 3-12.5 tons
PHP 50TCQ 548J 3-8.5 tons
Unit Size Designations Include Quantity of Compressors Indicator
A08 = 1-Compressor, 7.5 tonsD08 = 2-Compressor, 7.5 tons
Ultra High Efficiency Models / Sizes
Type Carrier Bryant
YAC 48HC 581J 3-12.5 tons
PAC 50HC 551J 3-12.5 tons
PHP 50HCQ 549J 3-8.5 tons
Unit Size Designations Include Quantity of Compressors Indicator
A08 = 1-Compressor, 7.5 tonsD08 = 2-Compressor, 7.5 tons
Carrier Model Number Identification (Sample)
48 Gas Ht
50 Elec Ht
TC-High Eff
HC Ultra High Eff
Heat Size
D-LH; E-MH; F-HH
L-Nox LH; M-Nox MH; N-Nox HH
S-SS LH; R-SS MH; T-SS HH, etc.
Refrigerant OptionsA-Std SystemD- 2 comp
Unit Sizes3-10 ton
Smoke Detector Option
Coil Coating Options
IFM Options
Voltage
Factory Revision
Base Unit Controls
0-ElectroMechanical
1-PremierLink
2-RTU-MP Control
Intake/Exhaust Opt
Service Options
Electrical Options
PackagingOptions
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
4 8 T C D A 0 4 A 1 A 5 - 0 A 0 A 0
Bryant Model Number Identification (Sample)
580J High EffGas/Elect
581J Ultra HiGas/Elect
558J High Eff Elect/Elect
548J High Eff Ht Pump
Voltage
Cooling Tons
06 = 5 ton
08=7.5 ton
14=12.5 ton
Ref System/Gas Options
A=Std Ref, Nat Gas Heat
B=Std Ref, Nat Gas Heat, Low NOx
D= 2-stg Comp, Al HX
F=2-stg Comp, SS HX
Heat Level
060=60,000
090=90,000
150=150,000
Coil Coating Options Factory Options
Packaging
Design Rev
Indoor Fan Options
Stg, Clg Coil Options
A=1 stg, Al/Cu-Al-Cu
D=1 stg, E-coat-Al/Cu
G=2 stg, Al/Al-Al/Cu
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
5 8 0 J E 0 6 A 0 7 2 A 1 A 0 A A -
High Efficiency Models
Puron® (R-410A)
Fixed-Bore Acutrol Metering
Revised Liquid Header Designs
Revised Liquid Header
Original HeaderRevised Coil Design
(Can contain dimples or no dimples)
Rooftop Unit Installation3~12.5 ton SRT
48/50TC; 48/50HC; 48/50TM
580/558J; 581/551J; 580/558F
Outline• Warnings – Caution
Safety Fire Explosion Electrical Shock Refrigerant Cut Hazards
• Pre Planning• Placement/Setting Unit
Curb• Existing• New
Attach duct Lifting/Setting Unit
• Strapping/Top Crate• Unit Placement
Cautions:• Condensate Drain• Through the Pan/Curb
Connections
• Preparing unit for Start-Up Outside Air Hood Flue Hood Gas Piping Condensate Electrical Connections
• Power• Thermostat
• Economizer Assembly Types Hood Assembly Wiring Connection
• 2~10 vdc• 4~20 ma
• Safety Improper installation, modification, service and
maintenance may cause personal and/or property damage.
Contact qualified installer, servicer or distributor for information or assistance
Wear safety glasses and work gloves.Have quenching cloth and fire extinguisher availableRead all Installation Instructions prior to beginning
workFollow all Local and National building and electrical
codes
• Fire ExplosionDisconnect gas piping from unit when leak
testing
DO NOT exceed gas pressures greater than 0.5 psig/3450 Pa to gas valve, damage will occur
If pressure testing BELOW 0.5 psig, isolate gas valve from piping using shut-off valve
• Electrical ShockBefore servicing or maintaining unit, turn off
power supply at disconnect/breaker and install Lock-Out tag
Test for voltage with multi-meter prior to performing service
Some installation may have more than one power source, i.e. dual power wiring and units with heat strips
• RefrigerantPuron® (R-410A) refrigerant systems operate
at higher pressures than R-22 systems
Do not use R-22 components or service equipment on Puron® systems
POE oil can cause damage to roof of building. If spilled use dry absorbent materials to eliminate spill.
• Cut HazardsAlways wear gloves, protective clothing and
safety glasses when handling sheet metal components. Failure to do this can result in cuts or abrasions.
Use caution when placing sheet metal components on rubber membrane roofing. Sharp edges can penetrate roofing.
Pre Planning
• Job Survey Consult Local Bldg Codes, NEC (National Electric Code) and
ANSI/NFPA 70 for installation requirements Determine unit location Check for overhead obstructions (for lifting) and proximity to
walls or parapets
• Plan for Unit Location Proper curb/unit support within structure Provide for Minimum Service and Safety clearances Clearances to combustible materials Allow for adequate Combustion and Ventilation
Pre Planning
• Service ClearanceA: 48” Unit disconnect
36” If “B” < 12”18” No disconnect, C/O18” Service 12” Minimum clearance
B: 42” Grounded surface (metal, masonry wall)
36” Non-electrically conductive (wood)
Flue products within 10 ftC: 36” Condensate drain
18”Minimum clearanceD: 48” Flue to combustible material
42” Grounded surface36” Non-electrically conductive
surfacesFresh Air Intakes within 10 ft
Placement/Setting Unit
• Sequence of Installation Install Curb Attached ductwork to curb Install Assy “Through the Pan” fittings Install Assy “Through the Curb” fittings Prepare Condensate drain (Center Drain) Rig and place unit Install Outdoor Air Hood Install Flue hood Install Gas piping Install Condensate drain connections Make Electrical Connections: Power – Control Install other accessories
Placement/Setting Unit• Curb
Installation• Level within tolerances
A-B 0.5”; B-C 1.0”; A-C 1.0”
• Insulate curb• Install cant strips• Install roof felt• Install flashing
Curb Gaskets
Curb Gasket Placements
A
B
C
Placement/Setting Unit• Attach Duct
To roof curb NOT unit (if vertical application) Curb gasket applied over duct flanges Maximum Cabinet Static*
• Lifting/Setting Unit• Use top crate of unit or spreader bars
when lifting.– Carefully lower top crate from roof once unit placed on curb
• Review the maximum weights of the units as listed in the Installation Instructions prior to lifting
* Measured below roof curb 003~014 // 024~150
Return Air w/o Economizer -0.35 in w.c.
Return Air w/ Economizer -0.45 in w.c.
Placement/Setting Unitprior to setting unit
• Cautions:1) Condensate Drain
• If condensate drain will exit unit horizontally proceed to setting unit
• If condensate drain will exit through the pan center drain and through the roof curb, install PVC fitting prior to setting unit.
• If not using center drain outlet, check to ensure outlet plug is installed and tight
2) Through the Pan Connections• Provides capability to draw
power, control wiring and field supplied gas piping
• Install prior to setting unit on curb
3) Through the Curb Connections• Provides capability to run
gas line up “under the curb” then exit “side of curb” to connect to unit
Placement/Setting Unitprior to setting unit
• Through the Pan • Through Curb Gas connection
Center Condensate Drain Hole
• Unit Placement Existing Curb
• 04 ~07 units– ¼” between side rails
and curb– 0.0” on duct end
between end rail and curb
– Overhang Condenser end ¼”
• 08 ~ 14 units– ¼” between side rails
and curb– 0.0” on duct end
between end rail and curb
– Overhang Condenser end 3 5/16”
– Flush to Curb Label Adaptor Curbs
• Ensure “duct end” of unit is FLUSH to the end of the curb for proper sealing
Placement/Setting Unit04~07 size
08-12 size
Flush to Curb Label onBlower Access Panel
Preparing unit for Start-Up
• Outside Air HoodHood box located
behind filter access panel - Remove
Indoor coil access panel is “Economizer Hood Top” – swing up
Attach hood sides to hood top and attach to unit panel.
Attach hood divider to hood sides
Filter Access Panel
Indoor Coil Access panel
Economizer Assembly
• Types Manual
• Can be used in Vertical/Horizontal configuration
• Adjustable from 0% - 100% Two Position
• Can be used in Vertical/Horizontal configuration
• Adjustable from 25% - 100% Modulating
• Different Vertical/Horizontal• Provides for Minimum and Min
to100% OA capability based on OD conditions
Economizer Assembly
• Wiring Connection• Molex connector
located in R/A section2-10 vdcSingle or
Two-Stage stat4-20 ma
•Used with PremierLink – ComfortLink
•No Economizer Controller mounted
•12 pin Molex Connector•500 Ohm Resistor installed in econo harness
• Flue Hood Secured to base pan beside
Burner compartment Attach with two screws Clearance to combustibles:
48”
• Flue Deflector (Accessory) CRFLUEDS001A00 2 ~ 12.5 ton units Reduces clearance to
combustibles to 18”
Preparing Unit for Start-Up
• Gas Piping Local/National Codes
US (NFPA54/ANSI Z223.1 NFGC)CAN (CAN/CSA B149.1 & B149.2)
• Standard gas design Up to 2000’ Convertible up to 6000’
• US: Derate 4% per 1000’ above sea level• CAN: Derate 10% between 2000’ – 4500’
• Gas pressure at GV inlet Nat Gas: Min 4”w.c. - Max 13”w.c. LP Gas: Min 11”w.c. - Max 13”w.c. (req’s Accy Kit) Fitting size: ½” for 03~08 (024-090) units; ¾” 012~014
(120~150) units• Size piping for maximum pressure
drop of 0.5”w.c. between unit GV and gas source• Three Gas Line Approaches
Horizontal to GV (across roof) Thru-Curb (Kit required) Thru-Base Pan (Kit required)
• Always use “Back-Up” wrench on Gas Valve neck (wrench fitting) when connecting piping
Preparing Unit for Start-Up
Through the Curb
Through the Base Pan
• Condensate Drain ¾” Connection: Two locations
• Horizontal– Exiting out the duct connection end of unit– Piping pitch: 1 inch per 10 ft away from unit – Do not use pipe smaller than ¾”– 4 inch trap recommended– Protect from freezing– Check “Center Drain Plug” for tightness
prior to setting unit on curb
• Center– Exiting below unit from center of
condensate pan– Remove “Center Drain Plug”– Piping pitch: 1 inch per 10 ft away from unit – Do not use pipe smaller than ¾”– 4 inch trap recommended– Protect from freezing (if necessary)
Preparing Unit for Start-Up
• Electrical Connections Non Powered Convenience Outlet (C/0):
• Requires separate 125 vac 15amp circuit Unit Powered: Incorporates step down transformer
• Convenience Outlet– Connect transformer primary per diagram– Powered (always energized): Connect C/O wires to “Line”
side of disconnect or incoming power, or local codes– De-energized (powered with disconnect): Connect C/O wires
to “Load” side of disconnect, or local codes
• Power: All units except 208/230 vac factory wired for voltage
shown on unit name plate.• 208 vac requires Low Voltage transformer wiring.
Connect black from 230 vac tap on transformer to 208 vac transformer tap.
Units without FIOP Disconnect• Field power wires connect to Compressor Contactor “C”
terminals 11 – 13 and Indoor Fan Contactor Units with FIOP Disconnect
• Remove factory test leads on Line side of Disconnect, discard
• Additional info later
Preparing Unit for Start-Up
• Field Control WiringThermostat:
• Single or Two Stage
PremierLink• Follow SI wiring
Preparing Unit for Start-Up
RTU-MP (FIOP only)
Microchannel Novation™ Condensing Coils
Outline
• What is Novation™ Condenser Coil
• Cleaning Procedures
• Repair Procedures
• RCD Repair Kit
What is Novation™ Condenser Coil
• Novation CoilAl/AlConstructionRefrigerant Flow
Cleaning Procedures
• CleaningNo SolventsAir Pressure
Repair Procedures
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Repair Procedures (Continued)
Novation™ RCD Repair Kit
• 50TJ660007
• Note: If refrigerant system is open, then replace liquid line drier